Tokyo, Japan

Shigemasa Shoji

This inventor holds 7 USPTO granted patents. Top assignee: Tdk Electronics Company, Limited. Active years: 1980-1983.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Shigemasa Shoji. Retrieved from https://idiyas.com/inventor/shigemasa-shoji

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile


% Patents Active = 100.0

Average Co-Inventor Count = 1.2

ph-index = 5

Forward Citations = 50(Granted Patents)


Location History:

  • Tokyo, JP (1980 - 1982)
  • Saku, JP (1981 - 1983)

Company Filing History:


Years Active: 1980-1983

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7 patents (USPTO):Explore Patents

Title: Shigemasa Shoji: Innovator in Magnetic Tape Technology

Introduction

Shigemasa Shoji is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of magnetic tape technology, holding a total of 7 patents. His innovative designs have improved the functionality and efficiency of magnetic tape cassettes.

Latest Patents

Among his latest patents, Shoji has developed a reel-to-reel magnetic tape cassette featuring a unique tape guide. This design includes a rotatable element adjacent to the supply reel and a non-rotatable element near the take-up reel. This configuration reduces frictional resistance of the tape at the unreeling side and minimizes slack during transport. Another notable patent involves a magnetic tape cassette with a tape guide coated in nickel-tin alloy plating, enhancing the surface that comes into slide-contact with the magnetic tape.

Career Highlights

Shoji is currently employed at TDK Electronics Company, Limited, where he continues to innovate in the realm of magnetic tape technology. His work has been instrumental in advancing the capabilities of magnetic tape cassettes, making them more reliable and efficient for various applications.

Collaborations

Throughout his career, Shoji has collaborated with notable colleagues, including Masatoshi Okamura and Haruo Shiba. These partnerships have fostered a creative environment that has led to groundbreaking advancements in their field.

Conclusion

Shigemasa Shoji's contributions to magnetic tape technology exemplify his dedication to innovation. His patents reflect a commitment to enhancing the performance of magnetic tape cassettes, solidifying his status as a key figure in this industry.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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